First, what the Hell is up with a campaign launch by video? Really strikes me as odd.

Next, why is he waiting until next week to appear anyplace in person? Everybody hits the campaign trail right away after launch. This definitely doesn't send a message of vigor and enthusiasm.

Also, I don't think Biden could win a debate against President Trump; never mind the general election.

However the saying goes... The best evidence that something will happen is if it happened before. Biden has failed to win his party's nomination at least twice now. My money is on him making it a three-peat.

You don't think Biden could beat Trump in a debate? Trump couldn't beat Hillary in a debate. And Hillary's Was obviously not a good debater.
Anybody who didn't vote for Trump in the primary would probably agree he didn't win any Republican debates either.